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    T420 Battery Threshold Question

    Discussion in 'Lenovo' started by Alkahest, Feb 17, 2015.

  1. Alkahest

    Alkahest Notebook Enthusiast

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    Hi. I've got some questions regarding the battery threshold setting of the Power Manager for the T420. The settings I use are to charge when it's bellow 50% and stop at 90%. However, when I'm above the charging threshold (75% for example), and I plug the AC connector, the percentage stays the same, it doesn't discharge. Is that how is supposed to behave?
    Thanks in advance
     
    Alkahest, Feb 17, 2015
    #1
  2. ajkula66

    ajkula66 Courage and Consequence

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    Welcome to the forum!

    Yes.
     
    ajkula66, Feb 17, 2015
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  3. Alkahest

    Alkahest Notebook Enthusiast

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    Thank you for your answer. So I suppose that, while the the battery is above the charge threshold, and the AC connector is plugged, the laptop is feeding from the AC and not the battery. Is this correct?
     
    Alkahest, Feb 18, 2015
    #3
  4. ajkula66

    ajkula66 Courage and Consequence

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    Exactly.
     
    ajkula66, Feb 18, 2015
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  5. Alkahest

    Alkahest Notebook Enthusiast

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    Ok, thank you for your answer.
     
    Alkahest, Feb 18, 2015
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  6. livebriand

    livebriand Notebook Consultant

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    Think of this as some simple if logic.
    *Plug in PC
    **if charge<50%, charge until 90%
    **else (charge >50%), do nothing
     
    livebriand, Feb 18, 2015
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    Alkahest likes this.